Hey Mike,
NED is only about an hour from your hotel. Go North on 495 to the second Rt 125 exit (Plaistow/Haverill exit, I think). Take Rt 125 north about 15-20 miles to Rt 101 and take Rt 101 East about 2 miles to the first exit. The track is right there at the exit. I work at HP, real close to Rt20 and 495. Unfortunately, I'm off to the Cape to play golf starting Friday afternoon.